Retinoic acid receptor-related orphan receptor γ (RORγ), a member of the nuclear hormone receptor superfamily, is a promising therapeutic target for treating Th17-mediated autoimmune diseases. We performed structure-based virtual screening targeting the RORγ ligand-binding domain. Among the tested compounds, s4 demonstrated RORγ antagonistic activities with micromolar IC₅₀ values in both an AlphaScreen assay (20.27 μM) and a cell-based reporter gene assay (11.84 μM). Optimization of the s4 compound led to the identification of compounds 7j, 8c, 8k, and 8p, all of which displayed significantly enhanced RORγ inhibition with IC₅₀ values of 40–140 nM. These results represent a promising starting point for developing potent small molecule RORγ inhibitors.

视黄酸受体相关的孤儿受体γ（RORγ）是核激素受体超家族的成员，是治疗Th17介导的自身免疫性疾病的有希望的治疗靶标。我们进行了针对RORγ配体结合域的基于结构的虚拟筛选。在测试的化合物中，s4在AlphaScreen测定（20.27μM）和基于细胞的报告基因测定（11.84μM）中均表现出具有微摩尔IC ₅₀值的RORγ拮抗活性。s4化合物的优化导致化合物7j，8c，8k和8p的鉴定，所有这些均显示出IC ₅₀显着增强的RORγ抑制作用值为40–140 nM。这些结果代表了开发有效的小分子RORγ抑制剂的有希望的起点。